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  • AD Move

    i apologies before for my poor english

    my companie has 3 offices all with own domain controller

    we now discuss move to a hosted data center because we grow large

    is this approach the sensible way;

    1 configure network to data center
    2 install domain controllers in data center as part of existing domain
    3 close down old domain controllers in offices

    any considerations or issue to be aware?

    how does this effect sites and services?

    ok to no longer have domain controller or global catalog on site. network links to data center shall be very good.

    thanking you

  • #2
    Re: AD Move

    If you are sure about reliability of data centre links, that is fine, but IMHO nothing lost by keeping DCs in the offices
    Tom Jones
    MCT, MCSE (2000:Security & 2003), MCSA:Security & Messaging, MCDBA, MCDST, MCITP(EA, EMA, SA, EDA, ES, CS), MCTS, MCP, Sec+
    PhD, MSc, FIAP, MIITT
    IT Trainer / Consultant
    Ossian Ltd
    Scotland

    ** Remember to give credit where credit is due and leave reputation points where appropriate **

    Comment


    • #3
      Re: AD Move

      okay

      remain the office domain controllers

      users would then authenticate to office domain controller (site)

      use data center domain controllers as main forest root domain controllers and fsmo roles and dns dhcp

      ?

      is it typical to have the data center with the only domain controllers for companies and none domain controllers on offices

      Comment


      • #4
        Re: AD Move

        How good are your links?
        cheers
        Andy

        Please read this before you post:


        Quis custodiet ipsos custodes?

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        • #5
          Re: AD Move

          400Mb on per office
          500 peoples per office

          Comment


          • #6
            Re: AD Move

            With 500 users at potential risk if the link to the data centre dropped, I would consider local DCs (more than one) to be absolutely essential.
            And probably some local file storage too
            Tom Jones
            MCT, MCSE (2000:Security & 2003), MCSA:Security & Messaging, MCDBA, MCDST, MCITP(EA, EMA, SA, EDA, ES, CS), MCTS, MCP, Sec+
            PhD, MSc, FIAP, MIITT
            IT Trainer / Consultant
            Ossian Ltd
            Scotland

            ** Remember to give credit where credit is due and leave reputation points where appropriate **

            Comment


            • #7
              Re: AD Move

              but redundant network links and 2 datacenters so less risk

              Comment


              • #8
                Re: AD Move

                You didn't mention the redundant links and multiple datacentres before -- how about providing us with all the relevant information -- what does your data centre SLA say about uptime, for example?

                Note there will be no correct answer to this question - my personal opinion is that for the number of users you have, local DCs are most suitable, but then, I would spec a local DC for a 50 user site.

                You may want to do a SWOT analysis or something similar of local vs data centre DCs and see what comes out best in your environment.
                Ultimately the choice is up to you and all people here can do is add their opinions.
                Last edited by Ossian; 7th September 2012, 10:39.
                Tom Jones
                MCT, MCSE (2000:Security & 2003), MCSA:Security & Messaging, MCDBA, MCDST, MCITP(EA, EMA, SA, EDA, ES, CS), MCTS, MCP, Sec+
                PhD, MSc, FIAP, MIITT
                IT Trainer / Consultant
                Ossian Ltd
                Scotland

                ** Remember to give credit where credit is due and leave reputation points where appropriate **

                Comment


                • #9
                  Re: AD Move

                  ok

                  we wish to move to 2 hosted cloud model so eliminate all local hardware

                  3 local office (all approximating 500 user each)
                  400mb from each office to each data center (redundant)
                  project to have 3 domain controller each data center

                  my theory. if one wan link from one office fail, other wan link still available.
                  400mb big link so no need for local dc.
                  no need for ad sites anymore in offices.

                  i would considered before to keep dc in every office but desire to move away from that to full hosted environment.

                  i know what you mean by local dc for over certain number users but where is the threshold (?) - i mean by this is there a point where bandwidth is so good that local dc per user count is not relevant.

                  example you spec a local dc for 50 user site with 10mb bandwidth to datacenter. but if you have 100mb link to datacenter would you still use a local dc. if you had 1gb link to datacenter would you still use local dc. where is the threshold (?)
                  Last edited by MoShakir; 7th September 2012, 14:40.

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                  • #10
                    Re: AD Move

                    Ultimately it is up to you -- there are no set figures.

                    One thing -- you are only considering the speed to the data centre, not the reliability. Does your SLA give any uptime guarentee or speed of response if the link goes down?
                    What if someone puts a digger through a crucial fibre somewhere on the route?

                    IMHO always think of the worst case -- what would happen if you were cut off from the data centre for an hour, a day, a week?
                    Tom Jones
                    MCT, MCSE (2000:Security & 2003), MCSA:Security & Messaging, MCDBA, MCDST, MCITP(EA, EMA, SA, EDA, ES, CS), MCTS, MCP, Sec+
                    PhD, MSc, FIAP, MIITT
                    IT Trainer / Consultant
                    Ossian Ltd
                    Scotland

                    ** Remember to give credit where credit is due and leave reputation points where appropriate **

                    Comment


                    • #11
                      Re: AD Move

                      thanking you again

                      reliability to data center would be links to 2 x data center so if 1 break, other link to other data center available

                      question about domain controllers number is if configure 2 x data center as 1 ad site then 2 x total domain controller should sufficent - 1 each site

                      if 1 data center fail, other data center dc is ok or would it better 2 x domain controller each site

                      Comment


                      • #12
                        Re: AD Move

                        You may want to consider some consultancy to help you with this -- 1500 users is a lot!
                        Tom Jones
                        MCT, MCSE (2000:Security & 2003), MCSA:Security & Messaging, MCDBA, MCDST, MCITP(EA, EMA, SA, EDA, ES, CS), MCTS, MCP, Sec+
                        PhD, MSc, FIAP, MIITT
                        IT Trainer / Consultant
                        Ossian Ltd
                        Scotland

                        ** Remember to give credit where credit is due and leave reputation points where appropriate **

                        Comment

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